Weather on April 15
Longmont, CO
55 Years of Data
Avg High
64°F
Avg Low
33°F
Warmest
2002
64°F avg
Coldest
1983
31°F avg
About This Date
April 15th in Longmont, CO typically brings mild spring weather, with average highs around 64°F and lows near 33°F — a 31°F daily swing. Over 55 years of records, the warmest April 15th was in 2002 (64°F average), while the coldest was 1983 (31°F) — a 33°F range across recorded history. Precipitation has occurred on 20% of recorded April 15th dates, with snow falling 7% of the time (heaviest snowfall: 10.4"). The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for April 15th in Longmont, CO? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 31° | 45° | — | — |
| 2024 | 85° | 41° | 63° | — | — |
| 2023 | 41° | 31° | 36° | 0.64" | — |
| 2022 | 59° | 31° | 45° | — | — |
| 2021 | 47° | 28° | 37° | — | — |
| 2020 | 48° | 17° | 33° | — | — |
| 2019 | 67° | 33° | 50° | — | — |
| 2018 | 61° | 30° | 45° | — | — |
| 2017 | 73° | 39° | 56° | — | — |
| 2016 | 66° | 40° | 53° | 0.25" | — |
| 2015 | 72° | 39° | 55° | — | — |
| 2014 | 66° | 28° | 47° | — | — |
| 2013 | 43° | 25° | 34° | 1.8" | 10.4" |
| 2012 | 54° | 33° | 43° | 1.32" | 0.1" |
| 2011 | 56° | 32° | 44° | — | — |
| 2010 | 66° | 38° | 52° | — | — |
| 2009 | 70° | 38° | 54° | — | — |
| 2008 | 80° | 48° | 64° | — | — |
| 2007 | 72° | 34° | 53° | — | — |
| 2006 | 76° | 50° | 63° | — | — |
| 2005 | 65° | 30° | 47° | — | — |
| 2004 | 73° | 44° | 59° | — | — |
| 2003 | 85° | 44° | 64° | — | — |
| 2002warmest | 79° | 50° | 64° | — | — |
| 2001 | 64° | 26° | 45° | — | — |
| 2000 | 81° | 28° | 54° | — | — |
| 1999 | 43° | 20° | 31° | 0.69" | 1" |
| 1998 | 42° | 30° | 36° | 0.18" | — |
| 1997 | 63° | 20° | 41° | — | — |
| 1996 | 51° | 23° | 37° | — | — |
| 1995 | 72° | 29° | 50° | — | — |
| 1994 | 69° | 28° | 49° | — | — |
| 1993 | 59° | 29° | 44° | 0.1" | — |
| 1992 | 74° | 45° | 59° | 0.36" | — |
| 1991 | 58° | 31° | 44° | — | — |
| 1990 | 74° | 29° | 51° | — | — |
| 1989 | 69° | 27° | 48° | — | — |
| 1988 | 67° | 33° | 50° | — | — |
| 1987 | 65° | 28° | 46° | — | — |
| 1986 | 65° | 26° | 45° | — | — |
| 1985 | 85° | 42° | 63° | — | — |
| 1984 | 58° | 28° | 43° | — | — |
| 1983coldest | 43° | 19° | 31° | — | — |
| 1982 | 80° | 39° | 60° | — | — |
| 1981 | 58° | 40° | 49° | — | — |
| 1980 | 68° | 38° | 53° | — | — |
| 1979 | 68° | 34° | 51° | — | — |
| 1978 | 58° | 41° | 49° | 0.25" | — |
| 1977 | 70° | 41° | 55° | 0.79" | — |
| 1976 | 69° | 38° | 53° | — | — |
| 1975 | 64° | 30° | 47° | — | — |
| 1974 | 46° | 24° | 35° | — | — |
| 1973 | 74° | 26° | 50° | 0.48" | 3" |
| 1972 | 42° | 30° | 36° | — | — |
| 1971 | 76° | 42° | 59° | — | — |
55 years of data from LONGMONT 2 ESE